Of all the different types of water filters, countertop water filters are the simplest to install and use. In fact, they are so simple to install that they are often referred to as no-installation water filters – simply attach the filter’s tube to your kitchen tap and you’re all set. Some countertop water filters are zero installation filters in the sense that they don’t have to be connected directly to a water supply. Gravity water filters are one example of filters that don’t fall into the category of pressure filters. Gravity water filters have an upper chamber that houses the filters and where unfiltered water is poured in for filtration. Other zero installation water filters like the Puricom ZIP countertop reverse osmosis system need electricity to operate, but they also don’t need to be connected to a water supply.

With so many available options, you need to know what to look out for when choosing a countertop water filter. The following tips may help you decide on a particular type of countertop filter: